-<p>I'm also using the <code>MissingH</code> library (install with</p>
-<pre><code>$ cabal install MissingH</code></pre>
+<p>I'm also using the <code>MissingH</code> and <code>Parsec-number</code> libraries (install with</p>
+<pre><code>$ cabal install MissingH
+$ cabal install parsec-number</code></pre>